The Spotted Sandpiper (Actitis macularius) is a shorebird of small size. It measures 18 to 20 centimeters long. In addition with its sister species, the Common Sandpiper, they make up the genus Actitis. They replace each other geographically; stray birds may settle with breeders of the other species and hybridize.
Their breeding habitat is close by fresh water across most of Canada and the United States. They migrate to the southern United States and South America, and are very rare...

The Great Knot (Calidris tenuirostris) is a small sized wader, although, it is the largest of the calidrid species.
Their breeding habitat is tundra in the northeast parts of Siberia. They nest on the ground, laying about four eggs in a ground scrape. They are strongly migratory, wintering on the coasts in southern Asia through to Australia. This species forms extremely large flocks during the winter. It’s a rare vagrant to western Europe.
This bird has short dark legs and a...

The Common Sandpiper (actitis hypoleucos) is a petite Palearctic wader. This bird and its American sister species, the Spotted Sandpiper (A. macularia), make up the genus Actitus. They are parapatric and substitute each other geographically; stray birds of either species may settle down with breeders of the other species and hybridize. Hybridization has also been reported between the Common Sandpiper and the Green Sandpiper, a basal species of the closely related shank genus Tringa.
An...

A long-legged wading bird, The Great Knot, is the largest of the calidrid species. They breed in the tundra of North Siberia, and migrate strongly in the winter to the coasts of Southern Asia through Australia, traveling in very large flocks. They lay about four eggs on the ground in a ground scrape. Great Knots migrate over long distances and use a limited number of staging sites during its annual round trip between the breeding grounds of Russia, and the non breeding grounds of Australia....

The Wood Sandpiper (Tringa glareola) is a species of wading bird that breeds in sub-Arctic wetlands from the Scottish Highlands across Europe and Asia. It is migratory and winters in Africa and southern Asia, including India. Its preferred winter habitat is fresh waters.
This bird has a short fine bill, brown back and long yellowish legs. It has a small white rump patch. It is closely related to the Common Redshank and Marsh Sandpiper. The Wood Sandpiper nests on the ground, or reuses an...

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.